Best Time to Call the UK from Australia
Australia and the UK are on opposite seasons for daylight saving, so the gap shifts between nine and eleven hours.
The gap through the year
From late October to late March, the UK is on GMT and Sydney is on AEDT, an 11-hour gap. From early April to early October, the UK is on BST and Sydney is on AEST, a 9-hour gap. In the transition weeks, around the turn of March and April and for three weeks in October, the gap is 10 hours.
Best call windows
The UK morning is the Australian evening. UK 08:00 GMT is 19:00 in Sydney, and UK 08:00 BST is 17:00 in Sydney. The best window is therefore the early UK morning, with a good chance of reaching colleagues before the Australian working day ends.
Perth is only seven or eight hours ahead and has no daylight saving, so it often offers longer overlaps.
Frequently asked questions
What is the time difference between Sydney and the UK?
It ranges between 9 and 11 hours depending on the time of year and the daylight saving rules in both countries.
Clock change guides
- What Is Daylight Saving Time (DST)? A Plain-English GuideWhat daylight saving time is, how it works in the UK, Europe and the US, why it exists, its history, who uses it and the argument over scrapping it.
- Why Do the Clocks Go Back in October? The Real ReasonThe clocks go back in autumn to return the UK to GMT, so winter mornings are lighter. The history, the rule, what time it happens and what changes for you.
- When Do the Clocks Go Forward Again After Going Back?When the UK clocks go forward again after the autumn change, how long the UK stays on GMT, when evenings get lighter and how to remember to reset your clocks.